<?phpclass Yii extends YiiBase{    /**     * 重写createWebApplication函数,自动加载全站配置参数     */    public static function createWebApplication ($config=null)    {		$config = require 'protected/config/main.php';		$config = array_merge_recursive(require 'protected/config/db.php', $config);		$config = array_merge_recursive(require 'protected/config/modules.php', $config);		$config = array_merge_recursive(require 'protected/config/urlmanager.php', $config);		$config = array_merge_recursive(require 'protected/config/params.php', $config);		$config = array_merge_recursive(require 'protected/config/customize.php', $config);		return new CWebApplication($config);    }}